Thank you, Mike. It's is good to find an intelligent man amongst the masses.
I have done an internet search and have discovered that this is a recurring problem though not well supported. I do have in my hands a timing tape from "FORD Motorsport" (not listed in their 2000 catalog) installed on a C6OE 6.5 damper. Sorry to say but there is no part number to persue. It features the four cardinal points plus 60 degress of advance noted. I looked here to FordBarn for two reasons. The main being to find the elusive 6.5 tape, but also to see what sort if dumb **** I would get in response. The latter outweighed the former....LOL.....
And I have looked at MSD, MrGasket, Jeggs, Summit, and several other FORD specialty dealers. See, the quest is for the product item, not for getting the job done, I can mark my own damper or use the 6.375 tape efectivly, that should not be too hard to understand, but it seems to be. RooDog